| 摘要 |
<p>PURPOSE:To enable an object to be sucked to be sucked without requiring a sensor for detecting presence or absence of the object to be sucked and a switching valve for selecting whether suction is performed or not. CONSTITUTION:A valve seat part 3a is formed at a periphery part of an exhaust hole of a main body 1, a valve body 3 for opening or closing the exhaust hole leading to an exhaust pipe 2 by contacting or leaving the valve seat part 3a and a spring 4 for pressing the valve body 3 to the valve seat part 3a are provided, and then an object 5 to be sucked is contacted and pressed by a feeler part 3b which is one edge of the valve body 3, thus opening the valve.</p> |
